SIST EN ISO 20553:2017

Radiation protection - Monitoring of workers occupationally exposed to a risk of internal contamination with radioactive material (ISO 20553:2006)

ISO 20553:2006 specifies the minimum requirements for the design of professional programmes to monitor workers exposed to the risk of internal contamination by radioactive substances and establishes principles for the development of compatible goals and requirements for monitoring programmes.

Strahlenschutz - Überwachung von beruflich strahlenexponierten Personen, bei denen ein Risiko der Kontamination mit radioaktiven Stoffen besteht (ISO 20553:2006)

Radioprotection - Surveillance professionnelle des travailleurs exposés à un risque de contamination interne par des matériaux radioactifs (ISO 20553:2006)

L'ISO 20553:2006 décrit les exigences minimales permettant d'établir des programmes de surveillance professionnelle des travailleurs exposés à un risque de contamination interne par des produits radioactifs et établit des principes pour le développement de finalités et d'exigences compatibles avec les programmes de la surveillance.

Radiološka zaščita - Spremljanje stanja delavcev, ki so poklicno izpostavljeni tveganju notranje kontaminacije z radioaktivnim materialom (ISO 20553:2006)

Standard ISO 20553:2006 določa minimalne zahteve za načrtovanje profesionalnih programov za spremljanje stanja delavcev, ki so izpostavljeni tveganju notranje kontaminacije z radioaktivnimi snovmi, ter načela za razvoj združljivih ciljev in zahtev za programe za spremljanje stanja.

General Information

• Status: Published
• Public Enquiry End Date: 14-Jun-2017
• Publication Date: 07-Nov-2017
• ICS: 13.100 - Occupational safety. Industrial hygiene
• ICS: 13.280 - Radiation protection
• Technical Committee: I13 - Imaginarni 13
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 19-Oct-2017
• Due Date: 24-Dec-2017
• Completion Date: 08-Nov-2017
• Ref Project: EN ISO 20553:2017 - Radiation protection - Monitoring of workers occupationally exposed to a risk of internal contamination with radioactive material (ISO 20553:2006)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 20553:2017
01-december-2017
5DGLRORãND]DãþLWD6SUHPOMDQMHVWDQMDGHODYFHYNLVRSRNOLFQRL]SRVWDYOMHQL
WYHJDQMXQRWUDQMHNRQWDPLQDFLMH]UDGLRDNWLYQLPPDWHULDORP,62
Radiation protection - Monitoring of workers occupationally exposed to a risk of internal
contamination with radioactive material (ISO 20553:2006)
Radioprotection - Surveillance professionnelle des travailleurs exposés à un risque de
contamination interne par des matériaux radioactifs (ISO 20553:2006)
Ta slovenski standard je istoveten z: EN ISO 20553:2017
ICS:
13.100 Varnost pri delu. Industrijska Occupational safety.
higiena Industrial hygiene
13.280 Varstvo pred sevanjem Radiation protection
SIST EN ISO 20553:2017 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 20553:2017

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SIST EN ISO 20553:2017


EN ISO 20553
EUROPEAN STANDARD

NORME EUROPÉENNE

October 2017
EUROPÄISCHE NORM
ICS 13.280
English Version

Radiation protection - Monitoring of workers
occupationally exposed to a risk of internal contamination
with radioactive material (ISO 20553:2006)
Radioprotection - Surveillance professionnelle des
travailleurs exposés à un risque de contamination
interne par des matériaux radioactifs (ISO
20553:2006)
This European Standard was approved by CEN on 13 September 2017.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 20553:2017 E
worldwide for CEN national Members.

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SIST EN ISO 20553:2017
EN ISO 20553:2017 (E)
Contents Page
European foreword . 3

2

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SIST EN ISO 20553:2017
EN ISO 20553:2017 (E)
European foreword
The text of ISO 20553:2006 has been prepared by Technical Committee ISO/TC 85 “Nuclear energy,
nuclear technologies, and radiological protection” of the International Organization for Standardization
(ISO) and has been taken over as EN ISO 20553:2017 by Technical Committee CEN/TC 430 “Nuclear
energy, nuclear technologies, and radiological protection” the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by April 2018, and conflicting national standards shall be
withdrawn at the latest by April 2018.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 20553:2006 has been approved by CEN as EN ISO 20553:2017 without any modification.

3

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SIST EN ISO 20553:2017


INTERNATIONAL ISO
STANDARD 20553
First edition
2006-04-15

Radiation protection — Monitoring of
workers occupationally exposed to a risk
of internal contamination with radioactive
material
Radioprotection — Surveillance professionnelle des travailleurs
exposés à un risque de contamination interne par des matériaux
radioactifs





Reference number
ISO 20553:2006(E)
©
ISO 2006

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SIST EN ISO 20553:2017
ISO 20553:2006(E)
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ii © ISO 2006 – All rights reserved

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SIST EN ISO 20553:2017
ISO 20553:2006(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 2
3 Terms and definitions. 2
3.1 Absorption types . 2
4 Symbols and abbreviated terms . 6
5 Purpose and need for monitoring programmes . 6
6 Reference levels. 8
7 Routine monitoring programmes. 9
7.1 General aspects . 9
7.2 Workplace monitoring. 10
7.3 Individual monitoring . 10
7.4 Methods and time intervals . 11
8 Special monitoring programmes. 14
8.1 General aspects . 14
8.2 Workplace monitoring. 14
8.3 Individual monitoring . 15
9 Task-related monitoring programmes.17
9.1 General aspects . 17
9.2 Workplace monitoring. 17
9.3 Individual monitoring . 17
10 Special cases of individual monitoring . 18
10.1 Actinides. 18
10.2 Contamination in wounds. 18
10.3 Contamination on the skin. 18
11 Recording, documentation and reporting. 18
11.1 Recording and documentation. 18
11.2 Reporting . 20
12 Quality management. 20
Bibliography . 22

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SIST EN ISO 20553:2017
ISO 20553:2006(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 20553 was prepared by Technical Committee ISO/TC 85, Nuclear energy, Subcommittee SC 2, Radiation
protection.
iv © ISO 2006 – All rights reserved

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SIST EN ISO 20553:2017
ISO 20553:2006(E)
Introduction
In the course of employment, individuals might work with radioactive materials that, under certain
circumstances, could be taken into the body. Protecting workers against risks of incorporated radionuclides
requires the monitoring of potential intakes and/or the quantification of actual intakes and exposures. The
selection of measures and programmes for this purpose requires decisions concerning methods, techniques,
frequencies etc. for measurements and dose assessment. The criteria permitting the evaluation of the
necessity of such a monitoring programme or for the selection of methods and frequencies of monitoring
usually depend upon the legislation, the purpose of the radiation protection programme, the probabilities of
potential radionuclide intakes, and the characteristics of the materials handled.
This International Standard offers guidance for the decision whether a monitoring programme is required and
how it should be designed. Its intention is to optimise the efforts for such a monitoring programme consistent
with legal requirements and with the purpose of the radiation protection programme. Recommendations of
international expert bodies and international experience with the practical application of these
recommendations in radiation protection programmes have been considered in the development of this
International Standard. Its application facilitates the exchanges of information between authorities, supervisory
institutions and employers. The International Standard is not a substitute for legal requirements.
In the International Standard, the word “shall” is used to denote a requirement and no deviation is allowed.
The word “should” is used to denote a recommendation from which justified deviations are allowed. The word
“may” is used to denote permission.
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SIST EN ISO 20553:2017

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SIST EN ISO 20553:2017
INTERNATIONAL STANDARD ISO 20553:2006(E)

Radiation protection — Monitoring of workers occupationally
exposed to a risk of internal contamination with radioactive
material
1 Scope
This International Standard specifies the minimum requirements for the design of professional programmes to
monitor workers exposed to the risk of internal contamination by radioactive substances and establishes
principles for the development of compatible goals and requirements for monitoring programmes.
This International Standard addresses the
a) purposes of monitoring and of monitoring programmes;
b) description of the different categories of monitoring programmes;
c) quantitative criteria for conducting monitoring programmes;
d) suitable methods for monitoring and criteria for their selection;
e) information that has to be collected for the design of a monitoring programme;
f) general requirements for monitoring programmes (e.g. detection limits, tolerated uncertainties);
g) frequencies of measurements;
h) special cases;
i) quality assurance; and
j) documentation, reporting, record-keeping.
This International Standard does not address
⎯ the monitoring of exposure to radon and its radioactive decay products;
⎯ detailed descriptions of measuring methods and techniques;
⎯ detailed procedures for in vivo measurements and in vitro analyses;
⎯ interpretation of monitoring results in terms of doses;
⎯ biokinetic data and mathematical models for converting measured activities into absorbed dose,
equivalent dose and effective dose; or
⎯ the investigation of the causes or implications of an exposure or intake.
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SIST EN ISO 20553:2017
ISO 20553:2006(E)
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 5725-1:1994, Accuracy (trueness and precision) of measurement methods and results — Part 1: General
principles and definitions
ISO 12790-1:2001, Radiation protection — Performance criteria for radiobioassay — Part 1: General
principles
BIPM/IEC/IFCC/ISO/IUPAC/IUPAP/OIML, International vocabulary of basic and general terms in metrology
(VIM), 1993
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5725-1, ISO 12790-1 and
International vocabulary of basic and general terms in metrology (VIM) and the following apply.
3.1 Absorption types
3.1.1
type F
F
deposited materials that have high (fast) rates of absorption into body fluids from the respiratory tract
3.1.2
type M
M
deposited materials that have intermediate (moderate) rates of absorption into body fluids from the respiratory
tract
3.1.1
type S
S
deposited materials that have low (slow) rates of absorption into body fluids from the respiratory tract
3.2
accuracy of measurement
characteristics of an analysis or determination that ensure that both the bias and precision of the resulting
quantity remains within specified limits
3.3
activity
transition rate
NOTE The activity is stated in becquerels (Bq).
3.4
activity median aerodynamic diameter
AMAD
value of aerodynamic diameter such that 50 % of the airborne activity in a specified aerosol is associated with
particles smaller than the AMAD, and 50 % of the activity is associated with particles larger than the AMAD
NOTE The aerodynamic diameter of an airborne particle is the diameter that a sphere of unit density would need to
have in order to have the same terminal velocity when settling in air as the particle of interest.
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SIST EN ISO 20553:2017
ISO 20553:2006(E)
3.5
clearance
net effect of the biological processes by which radionuclides are removed from the body or from a tissue,
organ or region of the body
NOTE The clearance rate is the rate at which this occurs.
3.6
contamination
activity of radionuclides present on surfaces, or within solids, liquids or gases (including the human body),
where the presence of such radioactive material is unintended or undesirable
3.7
dose
[ICRU Report 60:1998]
3.7.1
annual dose
committed effective dose resulting from all intakes occurring during a calendar year
3.7.2
committed effective dose
time integral of the equivalent-dose rate over an integration period
NOTE In this International Standard, the integration time is 50 years following any intake.
3.7.3
effective dose
sum of the weighted equivalent doses in all tissues and organs of the body
NOTE The effective dose is expressed in units of joules per kilogram (special name: sievert, Sv).
3.7.4
total dose
sum of effective dose from external radiation and committed effective dose from internal radiation
3.8
excretion function
the fraction of an intake excreted per day after a given time has elapsed since the intake occurred
3.9
event
any unintended occurrence, including operating error, equipment failure or other mishap, the consequences or
potential consequences of which are not negligible from the point of view of protection or safety
3.10
intake
activity of a radionuclide taken into the body in a given time period or as a result of a given event
3.11
in vitro analysis
analysis including measurements of radioactivity present in biological samples taken from an individual
NOTE 1 These include urine, faeces and nasal samples. In special monitoring programmes, samples of other materials
such as blood and hair may be taken.
NOTE 2 These analyses are sometimes referred to as indirect measurements.
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SIST EN ISO 20553:2017
ISO 20553:2006(E)
3.12
in vivo measurement
measurement of radioactivity present in the human body, carried out using detectors to measure the radiation
emitted
NOTE 1 Normally the measurement devices are whole-body counters or part-body (e.g. lung, thyroid) counters.
NOTE 2 Sometimes also referred to as direct measurements.
3.13
investigation level
level of dose, exposure or intake (specified by the employer or the regulatory authority) at or above which an
investigation is conducted
NOTE 1 See Clause 6.
3.14
detection limit
DL
smallest actual amount of a measurand that can be detected by a measuring method
NOTE Adapted from ISO 11929-7:2005.
3.15
monitoring
measurement of dose or contamination for the purpose of the assessment or control of exposure to radiation
or radioactive material, and the interpretation of the results
3.15.1 Categories of monitoring programme
NOTE The present International Standard distinguishes four different categories of monitoring programme, namely
routine monitoring programmes (3.15.1.1), special monitoring programmes (3.15.1.2), confirmatory monitoring
programmes (3.15.1.3), and task-related monitoring programmes (3.15.1.4).
3.15.1.1
routine monitoring programme
systematic monitoring programme
monitoring programme associated with continuing operations and intended to demonstrate that working
conditions, including the levels of individual dose, remain satisfactory, and to meet regulatory requirements
3.15.1.2
special monitoring programme
monitoring programme performed to quantify significant exposures following actual or suspected abnormal
events
3.15.1.3
confirmatory monitoring programme
monitoring programme carried out to confirm assumptions about working conditions, for example that
significant intakes have not occurred
3.15.1.4
task-related monitoring programme
specific monitoring programme
monitoring programme related to a specific operation, to provide information on a specific operation of limited
duration, or following major modifications applied to the installations or operating procedures, or to confirm
that the routine monitoring programme is suitable
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SIST EN ISO 20553:2017
ISO 20553:2006(E)
3.15.2 Types of monitoring
NOTE This International Standard distinguishes two different types of monitoring in each category of monitoring,
individual monitoring (3.15.2.2) and workplace monitoring (3.15.2.3). A further type of monitoring, collective
monitoring (3.15.2.1), is regarded as a particular form of workplace monitoring.
3.15.2.1
collective monitoring
monitoring applied to representative members of a group of workers whose working conditions are not
significantly different in terms of the risk of intakes
3.15.2.2
individual monitoring
monitoring by means of equipment worn by individual workers, or measurement of the quantities of radioactive
materials in or on the bodies of individual workers, or measurement of radioactive material excreted by
individual workers
3.15.2.3
workplace monitoring
monitoring using measurements made in the working environment
3.16
monitoring interval
period between two times of measurement
3.17
quality assurance
QA
planned and systematic actions necessary to provide adequate confidence that a process, measurement or
service will satisfy given requirements for quality, for example, those specified in a licence
3.18
quality control
QC
part of quality assurance intended to verify that systems and components correspond to predetermined
requirements
3.19
quality management
QM
all activities of the overall management function that determine the quality policy, objectives and
responsibilities, and implement them by means such as quality planning, quality control, quality assurance and
quality improvement within the quality system
3.20
recording level
level of dose, exposure or intake (specified by the employer or the regulatory authority) at or above which
values of dose, exposure or intake received by workers are to be entered in their individual exposure records
NOTE See Clause 6 for the reference levels.
3.21
reference level
investigation level or recording level
3.22
retention function
fraction of an intake present in the body or in a tissue, organ or region of the body after a given time has
elapsed since the intake occurred
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SIST EN ISO 20553:2017
ISO 20553:2006(E)
3.23
time of measurement
in the case of in vitro analysis, the time at which the biological sample (e.g. urine, faeces) was taken from the
individual concerned. In the case of in vivo measurements, the time at which the in vivo measurement begins.
4 Symbols and abbreviated terms
AMAD Activity median aerodynamic diameter
A Mathematical symbol for the detection limit, used in equations
DL
DL Detection limit
e(50) Dose coefficient: committed effective dose accumulated within 50 years following a unit intake
E(t) Value of the excretion function at time, t, (in days) after a unit intake
f Gastro-intestinal uptake fraction
1
IAEA International Atomic Energy Agency
ICRP International Commission on Radiological Protection
QA Quality assurance
QC Quality control
QM Quality management
R(t) Value of the retention function at time, t, (in days) after a unit intake
RPE Respiratory protective equipment
∆T Time interval (in days) between two measurements in a routine monitoring programme
5 Purpose and need for monitoring programmes
The purpose of monitoring, in general, is to verify and document that the worker is protected adequately
against risks from radionuclide intakes and the protection complies with legal requirements. Therefore, it forms
part of the overall radiation protection programme, which starts with an assessment to identify work situations
in which there is a risk of radionuclide intake by workers, and to quantify the likely intake of radioactive
material and the resulting committed effective dose received. Decisions about the need for monitoring and the
design of the monitoring programme should be made in the light of such a risk assessment.
Routine monitoring programmes are performed to quantify exposures where there is the possibility either of
undetected accidental intakes or of chronic intakes. The basis for routine monitoring programmes is the
assumption that working conditions, and thus risks of intake, remain reasonably constant. The design of such
a programme of regular measurements strongly depends on the level of the annual dose the quantification of
which is ensured. This level should be well below legally relevant limits; its definition should take into account
uncertainties, for example in activity measurement and dose assessment. If this level is too high, intakes
representing considerable fractions of dose limits could be overlooked, whilst a low value can cause the
expenditure of unnecessary efforts at low exposures.
Special monitoring programmes are performed to quantify significant exposures following actual or suspected
abnormal events. Therefore, in comparison to routine monitoring programmes, the time of intake is usually
much better known and additional information can be available, which helps to reduce the uncertainty of
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SIST EN ISO 20553:2017
ISO 20553:2006(E)
assessment. The purposes of dose assessment in such cases include assisting in decisions about
countermeasures (e.g. decorporation therapy), compliance with legal regulations and aiding decisions for the
improvement of conditions at the workplace. In most cases, special monitoring programmes are performed
individually. In cases where there is reason to suspect that exposure limits could be exceeded, it can be
appropriate to extend the measurements in order to derive individual retention and excretion functions and
biokinetic model parameters.
Confirmatory monitoring programmes can be required to check the assumptions about exposure conditions
underlying the procedures selected, e.g. the effectiveness of protection measures. It may consist of workplace
or individual monitoring, e.g. as occasional measurements to investigate the potential accumulation of activity
in the body.
Task-related monitoring programmes apply to a specific operation. The purpose and the dose criteria for
carrying out task-related mon
...